221500127044 has 27 divisors (see below), whose sum is σ = 450924386493. Its totient is φ = 94925802048.

The previous prime is 221500127033. The next prime is 221500127071. The reversal of 221500127044 is 440721005122.

The square root of 221500127044 is 470638.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 28153484100 + 193346642944 = 167790^2 + 439712^2 .

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 6572124 + ... + 6605740.

Almost surely, 2^221500127044 is an apocalyptic number.

221500127044 is the 470638-th square number.

It is an amenable number.

221500127044 is an abundant number, since it is smaller than the sum of its proper divisors (229424259449).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221500127044 is an frugal number, since it uses more digits than its factorization.

221500127044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67252 (or 33626 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 28.

The spelling of 221500127044 in words is "two hundred twenty-one billion, five hundred million, one hundred twenty-seven thousand, forty-four".